Parts for your 2016 Subaru Exiga-Throttle position sensors

2016 Subaru Exiga throttle position sensor (TPS): what it does and how to look after it

Yes, a throttle position sensor is used on the 2016 Subaru Exiga. Subaru’s technical literature identifies electronic throttle control on FB-series engines used in this model, with the TPS integrated into the throttle body. This is documented in Subaru factory service manual diagnostics for throttle position–related DTCs (such as P0121–P0123), Subaru technical training on FB engine management and ETCS, and Subaru parts catalogues that list the throttle body assembly with built-in position sensors rather than a separate, serviceable TPS.

On the 2016 Exiga, the TPS is part of the electronic throttle body and constantly reports the throttle plate angle to the engine control unit. Working alongside the accelerator pedal position sensors, it lets the ECU manage air flow, fuel delivery, ignition timing, idle speed, cruise control and even transmission shift behaviour. In short, it’s a key sensor for smooth drivability, decent fuel economy and proper emissions control.

There’s no scheduled replacement interval for the TPS, it’s a replace-if-faulty item. Typical clues that the TPS or throttle body needs attention include an erratic idle, flat spots on take-off, sudden loss of power or limp mode, poor fuel economy, cruise control dropping out and warning lamps (check engine, traction/ESP). Common related fault codes include P0121–P0123 and P0221–P0223.

Servicing tips for a 2016 Subaru Exiga throttle body/TPS:

• Keep the throttle plate clean. Use a proper throttle-body cleaner and a lint-free cloth. Don’t flood the electronics or submerge anything.
• Inspect the electrical connector and harness near the intake for corrosion, moisture or chafing. Repair any damaged wiring and ensure a snug, clean connection.
• If the plate was heavily gummed up or the battery’s been disconnected, perform an idle relearn. The ECU will usually relearn after a short, varied drive, or a technician can complete it with a scan tool.
• If the TPS has failed, replace the throttle body assembly. On late-model Subarus the TPS is built-in and not sold separately.
• Fit a new throttle body gasket, torque the fasteners evenly, and check for vacuum leaks afterwards.

A workshop with a capable scan tool can confirm TPS health by checking live data for smooth, linear throttle angle changes and verifying there are no dead spots or dropouts. When replaced and relearned correctly, the Exiga’s throttle response should feel crisp and consistent.

Popular questions about 2016 Subaru Exiga throttle position sensors

Does the 2016 Exiga have a separate TPS I can change?
No. On this model the TPS is integrated into the electronic throttle body. If the sensor fails, the usual fix is to replace the throttle body assembly. The accelerator pedal has its own position sensors, which are separate parts.

What are the common signs of a failing TPS on a 2016 Exiga?
Surging or unstable idle, hesitation, sluggish response, sudden limp mode, worse fuel economy and warning lights are typical. Fault codes like P0121–P0123 or P0221–P0223 often appear, and cruise control may stop working.

Can a clean fix TPS issues, or do I need a new throttle body?
If the issue is a sticky throttle plate, a careful clean can help. But if the sensor circuitry is faulty, cleaning won’t cure it—you’ll need a throttle body replacement. Always check wiring and connectors before condemning the assembly.